0000000000753805
AUTHOR
Morvan Ouisse
showing 7 related works from this author
A new method for Poisson’s ratio measurement with time-of-flight technique: application to the preliminary design of smart composite structures
2019
International audience; Smart composite structures, which are able to modify their mechanical properties with respect to their environment (e.g. active vibration control), to interact with other structures (e.g. mechatronic) or with human beings (e.g. Human-Machine Interaction), are widely used in the modern industrial fields (e.g. aerospace), due to the intensification of the operational dynamic environment and an increase of durability requirements from the customers. Conventionally, the piezoelectric transducers are glued on the surface of the structure and the power and control electronics are away. To protect the transducer elements and their connections and develop some industrially p…
Structural health monitoring of a smart composite structure with a Time-of-Flight method
2017
International audience; Smart composite structures with a fully distributed set of integrated piezoelectric transducers are used to demonstrate the feasibility of embedded Structural health monitoring (SHM). Indeed, the piezo ceramics elements have been directly integrated into the heart of the composite during the manufacturing process. Then, a Time-of-Flight method has been applied. This technique is based on the duration measurements of a wave propagation with a simple and low cost experimental setup. Integrated piezoelectric transducers are used for monitoring the behavior of the structure. In this research, special plates (with a piezo ceramics disk on each corner), made of glass fibre…
Out-of-plane elastic constants of curved cell walls honeycombs
2021
International audience; The work describes the out-of-plane properties of a curved wall honeycomb structure evaluated using analytical models and finite elements techniques. Out-of-plane properties are calculated using a theoretical approach based on energy theorems and validated using a fullscale<br>finite element technique to simulate transverse shear tests. The effects of the curvature of the walls and the depth of the honeycomb cells on the out-of-plane elastic constants are evaluated and excellent agreement is observed between theoretical and numerical models. These curved cell wall honeycombs feature specific (i.e., relative density weighted) highly tailorable upper shear bounds tha…
Complex composite structures with integrated piezoelectric transducers
2016
International audience; Nowadays, in different industrial fields as transport or aerospace, a research effort is conducted to reduce the structural weight. One of the most promising solutions is the use of composite structures due to their high stiffness, their low mass density and their low damping factor. At the same time, there is an intensification of the operational dynamic environment and an increase of durability requirements. These different expectations seem to be contradictory. One solution to manage these points is to design and manufacture smart composite structures with a fully distributed set of integrated piezoelec-tric transducers. These structures are able to modify their m…
SmaRt Composite StructurE (Project SyRaCuSE) Towards mastering challenges concerning the product lifecycle
2017
International audience; Since the middle of the 80’s, smart composite structures are announced as being able to revolutionize the industrial world and become a main engine of economic growth. A smart composite structure is a structure combining distributed actuator and sensor networks embedded at the heart of the matter and a command and control unit. The idea is to mimic nature in order to produce industrial composite structures that will adapt their functionality to their environment in a predicted manner. This approach seems attractive with a lot of potential applications: Vibration suppression, non-Destructive Evaluation, Energy Harvesting, Internet of Things... In a way, the smart comp…
LAMINATES WITH INTEGRATED PIEZOELECTRIC TRANSDUCERS: INFLUENCE OF THE TRANSDUCERS LOCATION ALONG THE THICKNESS-AXIS ON THE STRUCTURAL PERFORMANCE
2017
International audience; The composite structures embedding piezoelectric implants are able to modify their mechanical properties with respect to their environment (e.g. active vibration control), to interact with other structures (e.g. mechatronic) or with human beings (e.g. Human-Machine Interaction). Conventionally, to functionalize a mechanical device, the piezoelectric transducers are glued on the top surface of the structure and the power and control electronics are away. To protect the transducers and their electric connections and develop some industrial products in "plug and play" mode, it is necessary to be able to embed a wide distributed network of piezoelectric implants into the…
Numerical Optimization of Liner Impedance in Acoustic Duct
2020
Abstract The SALUTE project aims at evaluating performance of metacomposites for acoustic smart lining in grazing turbulent flow. Theoretical and numerical investigations are carried out for designing innovative specimen. A specific focus is placed in the realization of prototypes for evaluating the metacomposite liner performances in 2D and 3D liners, its process complexity and robustness. The insight gain in this project is new tools for obtaining innovative samples; the acoustical experimental tests demonstrate efficiency and robustness of such technology for controlling UHBR noise emission. This paper is focused on parametric study based on the maximization of the absorption coefficient…